基于含水层储水量的泉流量预测

Forecast of spring flow based on karst aquifer storage capacity

水资源短缺是制约西南岩溶地区经济发展和影响生态平衡的主要因素,开展岩溶含水系统水流运动规律的研究,对于该地区水资源可持续利用具有重要的意义。利用自行设计研制的裂隙网络-管道双重介质物理模型,借助自动化数据采集技术,采用物理试验的研究方法,探讨不同含水层初始饱和厚度条件下泉流量的衰减规律。分析试验结果表明:泉流量与含水层储水量之间存在明确的函数关系,初始衰减流量、衰减系数均与含水层初始饱和厚度、含水层初始储水量存在相关关系,基于相关分析,建立了泉流量衰减预测模型;同时,含水层初始饱和厚度亦可通过泉流量的初始衰减流量和衰减系数进行预测。

Water resources shortage is the main problem in the economic development and ecosystem balance in the southwest karst areas of China. Thus, study on the groundwater flow is essential to the sustainable development in the karst areas. Based on the dual-medium physical model of fracture network and passage and automated data collection system, some physical experiments were conducted under different initial saturated aquifer thicknesses to investigate spring flow attenuation law. The results showed that there was a specific function relation between the spring flow and the water storage capacity of the aquifer. The initial attenuation flow and the attenuation coefficient were related to the initial saturated thickness and the initial water storage of the aquifer. Based on the correlation analysis, the spring flow attenuation prediction model was established. Meanwhile, the initial saturated aquifer thickness also can be predicted by the initial spring attenuation flow and the attenuation coefficient.